MNK has the lowest overall output, because all that MNK Players ever do, is stunlock bullying one single enemy, run away and wait until the victim is alive again (since that is JUST enough time for your full Burst to be ready again) and then rinse and repeat.

Favorite Victims usually are casters, especially BLM from what i experienced fi(r)st HAND. Dealing with a MNK as BLM is compareable to your first ever prostate exam, but if you overcome it, you will be glad its BEHIND you.